TY  - BOOK
AU  - Willis,Arthur John,1922-
TI  - Introduction to plant ecology: a guide for beginners in the study of plant communities 
SN  - 0045810095
PY  - 1973///
CY  - London
PB  - George Allen & Unwin
KW  - Botany
KW  - Ecology
N1  - Bibliography: p. 222-227
ER  -